一次性使用无菌注射器其镉的含量应是()
A.≤10μg/g
B.≤5μg/ml
C.≤1.0μg/ml
D.≤0.5μg/ml
E.≤0.1μg/ml
参考答案:E
已知∠α与∠β互余,且∠α=35°18′,则∠β=______°______′.
在窗体上画一个命令按钮,然后编写如下代码:Private Type Record ID As Integer Name As String * 20End TypePrivate Sub Command1_Click() Dim MaxSize, NextChar, MyChar Open “d:\temp\female. txt” For Input As #1 MaxSize = LOF(1) For NextChar = MaxSize To 1 Step -1 Seek #1, NextChar MyChar = Input(1, # 1) Next NextChar Print EOF(1) Close #1End Sub程序运行后,单击命令按钮,其输出结果为______。
A.True
B.False
C.0
D.Null